Acer Laptop Brightness Fix

This tutorial provides a fix for the inability of adjusting brightness on Linux laptops. The following tutorial has been confirmed as a solution for fixing the brightness controls on an Acer Aspire 5741. The tutorial is carried out by modifying GRUB.
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Edit GRUB with your favorite text editor

nano /etc/default/grub

Add the following entries to these specific lines (do NOT delete any arguments you currently have, e.g. encryption).